View source for Libertas

{{OLPC}}
{{Translations}}
[[Libertas]] is the codename for the Marvel 88w838X series of wireless chipsets, and also refers to the firmware for them.

== Hardware parts ==

<table border="1">
<caption> <i>Baseband Processor Product Selection table</i>
</caption>

<tr >
<th> Part no.
</th><th> examples
</th><th> b/g/a
</th><th> Package option
</th><th> CLK Type
</th><th> Interface
</th><th> Feature/Advantage
</th></tr>

<tr BGCOLOR="#dddddd">
<td> 88W8305
</td><td> ?
</td><td> b
</td><td> TQFP&nbsp;128pin&nbsp;14x14x1.2<br>TBGA&nbsp;no&nbsp;option<br>Flip&nbsp;chip&nbsp;Yes
</td><td> 20, 40, 44 CMOS only
</td><td> CF SDIO (SPI)
</td><td> TKIP (firmware) AES (hardware) WPA (firmware) Power Save
</td></tr>

<tr BGCOLOR="#dddddd">
<td> 88W8381
</td><td> ?
</td><td> b
</td><td> TQFP&nbsp;128pin&nbsp;14x14x1.2<br>TBGA&nbsp;132pin&nbsp;8x8x1<br>Flip&nbsp;chip&nbsp;Yes
</td><td> 19.2, 20, 26, 38.4, 40, 44 COMS &amp; Low swing sine wave
</td><td> CF SDIO (SPI)
</td><td> 8305 + TKIP (hardware) 802.11e (QoS) 802.11i (Security) BT coex
</td></tr>

<tr BGCOLOR="#dddddd">
<td> 88W8385
</td><td> Gumstix
</td><td> a/b/g
</td><td> TQFP&nbsp;128pin&nbsp;14x14x1.2<br>TBGA&nbsp;132pin&nbsp;8x8x1<br>Flip&nbsp;chip&nbsp;Yes
</td><td> 19.2, 20, 26, 38.4, 40, 44 COMS &amp; Low swing sine wave
</td><td> CF SDIO (SPI) Generic SPI
</td><td> 8381 + a/g
</td></tr>

<tr BGCOLOR="#ffffff">
<td>'''[[88W8388]]'''
</td><td> XO, Xbox360
</td><td> a/b/g
</td><td> TQFP&nbsp;No<br>TBGA&nbsp;132pin&nbsp;8x8x1<br>Flip&nbsp;chip&nbsp;Yes
</td><td> 19.2, 20, 26, 38.4, 40, 44 COMS &amp; Low swing sine wave
</td><td> SDIO (SPI) USB 2.0
</td><td> 8385 + TCP/IP termination NAND Flash I/F Audio Codec I/F
</td></tr></table>

<br>
<table border="1">
<caption> <i> RF transceiver Product Selection table</i>
</caption>

<tr >
<th> Part no.
</th><th> examples
</th><th> b/g/a
</th><th> Package option
</th><th> CLK Type
</th><th> Feature/Advantage
</th></tr>

<tr BGCOLOR="#dddddd">
<td> 88W8010
</td><td> ?
</td><td> b/g
</td><td> QFN&nbsp;48pin&nbsp;7x7x1<br>XFQFN&nbsp;48pin&nbsp;6x6x0.5
</td><td> 19.2, 20, 26, 38.4, 40, 44 CMOS
</td><td> On chip 2.4GHz PA<br>On chip Rx diversity<br>Tx power@pin = +22dBm@11b, +16dBm@11g
</td></tr>

<tr BGCOLOR="#ffffff">
<td>'''[[88W8015]]'''
</td><td> XO, Gumstix
</td><td> b/g
</td><td> QFN&nbsp;48pin&nbsp;7x7x1<br>XFQFN&nbsp;48pin&nbsp;6x6x0.5
</td><td> 19.2, 20, 26, 38.4, 40 COMS & Low swing sine wave
</td><td> On chip 2.4GHz PA<br>Tx power@pin = +22dBm@11b, +16dBm@11g<br>Enhanced filtering for cellular handsets<br>Low swing sine wave CLK-in
</td></tr>

<tr BGCOLOR="#dddddd">
<td> 88W8030/8031
</td><td> Xbox360 (88W8030)
</td><td> a/b/g
</td><td> QFN&nbsp;56pin&nbsp;8x8x1<br>XFQFN
</td><td> 8030 40MHz crystal<br>8031 19.2, 20, 26, 38.4, 40, 44 COMS
</td><td> On chip 2.4GHz PA / Need ext.PA for 5GHz<br>Tx power@pin = +22dBm@11b, +16dBm@11g, +0dBm@11a pre-Driver<br>8030 has internal OSC supply for BBP
</td></tr>

<tr BGCOLOR="#dddddd">
<td> 88W8035/8036
</td><td> ?
</td><td> a/b/g
</td><td> QFN&nbsp;no<br>XFQFN&nbsp;56pin&nbsp;7x7x0.5
</td><td> 8035 19.2, 20, 26, 38.4, 40 COMS & Low swing sine wave<br>8036 40MHz crystal
</td><td> Need ext.PA for both 2.4GHz and 5GHz<br>Tx power@pin = +0dBm@pre-Driver<br>Enhanced filtering for cellular handsets<br>8036 has internal OSC supply for BBP<br>Low swing sine wave CLK-in
</td></tr></table>


* The OLPC [[XO]] laptop uses a '''88w8388''' baseband processor along with a '''88w8015 rf''' transceiver connected via an internal USB interface.


===Firmware===
The Libertas firmware is separate from the XO-1's [[Open Firmware]] boot firmware.

* See [[How to check the OS and firmware versions]].

* As of November 2008, Ricardo Carrano recommends firmware version 22.p18.

* http://dev.laptop.org/pub/firmware/libertas/RELEASE_NOTES provides differences between Libertas firmware releases.

* How to flash the [[Libertas Boot2 Flash|Libertas firmware]] (Last edition: 2006-11-03)

* The XBox 360 wireless module is also based on the '''88w8388''' and possibly can be used with the olpc firmware.
*: http://wiki.free60.org/WifiAdapter
*: http://www.free60.org/wiki/Wifi_Adapter
*: incompatible firmware loader
*: 4Mbit SPI flash
*: uses 88W8030 RF chip

* There is a project to take the driver developed for the OLPC and utilized it for all of the libertas family including '''88w8385 cf cards''': http://projects.linuxtogo.org/projects/marvell8385/
* Linux 2.6.24 will include support for 88w8385 (compact flash + sdio) mode and 88w8686 (sdio), using the OLPC driver.

* There are still some issues regarding the openness of the firmware <trac>46</trac>
* Discussions about how to open libertas firmware [http://lists.laptop.org/pipermail/devel/2007-January/003720.html][http://lists.laptop.org/pipermail/devel/2007-September/006453.html]

[[Category:Network]]
[[Category:Firmware]]